DTC P0116

DTC P0116  : ECT Sensor 1 Circuit Range/Performance Problem

DTC (PGM-FI)

1. ECT sensor 1 check

   -1. Turn the vehicle to the ON mode.

   -2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   ECT SENSOR 1	More than 176	deg.F

   Do the current condition(s) match the threshold?

   YES 

   Note the value of ECT SENSOR 1, then go to step 3.

   NO 

   Note the value of ECT SENSOR 1, then go to step 2.

2. Problem verification (low temperature)

   -1. Note the value of ECT SENSOR 1 in the DATA LIST with the HDS.

   Signal	Current conditions
   	Values	Unit
   ECT SENSOR 1

   -2. Start the engine. Hold the engine speed at 3000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.

   -3. Check ECT SENSOR 1 in the DATA LIST with the HDS.

   Signal	Current conditions
   	Values	Unit
   ECT SENSOR 1

   Does ECT SENSOR 1 change 18 deg.F (10 deg.C) or more?

   YES 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM.

   NO 

   The failure is duplicated. Replace ECT sensor 1 , then do the repair verification.

3. Problem verification (high temperature)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Open the hood, and let the engine cool for 3 hours.

   -3. Turn the vehicle to the ON mode.

   -4. Check ECT SENSOR 1 in the DATA LIST with the HDS.

   Signal	Current conditions
   	Values	Unit
   ECT SENSOR 1

   Does ECT SENSOR 1 change 18 deg.F (10 deg.C) or more?

   YES 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM.

   NO 

   The failure is duplicated. Replace ECT sensor 1 , then do the repair verification.

4. Repair verification

   -1. Turn the vehicle to the ON mode.

   -2. Reset the PCM with the HDS .

   Reset PCM

   -3. Do the PCM idle learn procedure.

   -4. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P0116 ECT Sensor 1 Circuit Range/Performance Problem

   DTC (PGM-FI)

   Is DTC P0116 indicated?

   YES 

   Check for poor connections or loose terminals at ECT sensor 1 and the PCM, then go to step 1.

   NO 

   Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.